We have 750KVA DG set, we want to introduce REF relay with 1250/1A,CL PS,Current transformers.The lead distance of 2.5mm copper flexible cable from CT to relay is around 5mtrs.We would like to know the knee point votage(VK) & IM calculion for CT's
1444what do you mean by the "bay" in a switchyard? how to determine exact number of bays in a substation?
8 65255my question is that....few days ago i had installed a three phase motor starter for an electric saw.the motor will run and make the hydraulic pressure which will be goes to pressure cylender by up and down lever.two number of limitswitches are also installed on cylinder for safety of motor.now when the arm of cylinder reaches to the upper or lower limit it will cut the motor's line.and motor will be stop.now wana know that what will i do that motor runs continue after the limitswitch cut it down but it shold not be made any pressure.pls answer me in brief.
3 3457I want to calculate how much capacitor we connect to maintain the unity power factor? Is there any formula? Pls give me the answer
1439Among the following Which is vector quantity? a. Flux b. permitivity c. flux density d. magnetic intensity
2 3523I HAVE A INCOMING 100A MCCB TPN 25KA, CABLE LENGHT OF 80M 70MM CABLE SIZE FROM MAIN SUBBOARD TO NEW DB.BASE ON THE FAULT LEVEL SETTING OF 45KA.I WOULD LIKE TO FIND OUT 25KA ENOUGH KA. APPRECIATE IF SOMEBODY CAN ASSIST ME WITH FORMULA FOR THIS. FRM: JEFF
3503Post New Electrical Engineering Questions
what is x'mer ,isolation x'mer & yltra-isolation x'mer?????
sent to a site and asked to explain how you would like a twenty seven flour building should be supplied with lighting and sockets plus a water boiler.
is it necessary to earth the rmu before cutting off the transformer winding?if yes why?
From what on-site components does the HT panel monitoring the bus-bars in a 11kV system take inputs?
ACB & VCB how do work and saftes and how can maintenance in this and parts name show with picture
what is high - pot test. what's its use?????
How to calibrate or test an LT Air Circuit breaker 440 volts, 35 KA, 800 Amps ?
what is calculation mathod/formaulla for deciding Size of busbar (Copper/ aluminum)for L.T. panel on Various Fault level like 50kA,25kA,10kA
What is the effect on in Zone and out zone fault if Phase side CT is Vk/2<30 mA and Neutral side is CT is Vk/4<30 mA for Transformer REF protection
please give me all the Alarm .Trip ,Safety Relays & Conditions of Chiller mail me on ashokbabunhce@gmail.com
If we have 11 kv RYB Phase single core cable near about. Then wht effect and losses
how to calculate distance between busbar supporters for LT panel, what are the factors influencing in this design
What is K-rated transformer? What is the use of it? What can be the size(pls provide calculation if possible) of K- factor transformer for 550kW,690V motor operating with drive (VFD)?
What are PLC leader logic program method
sir, i'm preparing for hpcl exam officer trainee pls tell me how the exam ques paper pls pls
